EP0367240B1 - Bohrstrangzwischenstück mit kontrollierbarem Luftdurchlass - Google Patents

Bohrstrangzwischenstück mit kontrollierbarem Luftdurchlass Download PDF

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Publication number
EP0367240B1
EP0367240B1 EP89120215A EP89120215A EP0367240B1 EP 0367240 B1 EP0367240 B1 EP 0367240B1 EP 89120215 A EP89120215 A EP 89120215A EP 89120215 A EP89120215 A EP 89120215A EP 0367240 B1 EP0367240 B1 EP 0367240B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
adaptor
drilling
passage
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89120215A
Other languages
English (en)
French (fr)
Other versions
EP0367240A1 (de
Inventor
Darcy Lester Flynn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
S&T No 13 Pty Ltd
Original Assignee
Advanced Drilling Tech
Advanced Drilling Technologies Pty Ltd (acn 011 003 759)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU24479/88A external-priority patent/AU604378B2/en
Application filed by Advanced Drilling Tech, Advanced Drilling Technologies Pty Ltd (acn 011 003 759) filed Critical Advanced Drilling Tech
Publication of EP0367240A1 publication Critical patent/EP0367240A1/de
Application granted granted Critical
Publication of EP0367240B1 publication Critical patent/EP0367240B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
    • E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers
    • E21B17/073—Telescoping joints for varying drill string lengths; Shock absorbers with axial rotation
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/10—Valve arrangements in drilling-fluid circulation systems
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B31/00—Fishing for or freeing objects in boreholes or wells
    • E21B31/03—Freeing by flushing
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells
    • E21B34/12—Valve arrangements for boreholes or wells in wells operated by movement of casings or tubings
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
    • E21B44/10—Arrangements for automatic stopping when the tool is lifted from the working face
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/52—Mechanical actuating means with crank, eccentric, or cam
    • F16K31/528—Mechanical actuating means with crank, eccentric, or cam with pin and slot

Definitions

  • THIS INVENTION relates to an adaptor for drilling strings.
  • the operator of a drilling rig must operate the rig under a number of conflicting conditions. As he is paid by the metre depth drilled, a high drilling rate increases his operating profit on the rig. However, a loss of the drilling equipment (e.g. the hammer and/or drilling bit) down the hole can incur a monetary loss of $50,000 (Aust.) plus, easily cancelling the operating profits.
  • a loss of the drilling equipment e.g. the hammer and/or drilling bit
  • the drilling equipment is lost due to a collapse of the hole wall above the drilling equipment, the dislodged material jamming the drilling equipment down the hole.
  • the collapse may be due to a physical failure in the soil stratum around the hole, or the dislodgement of rocks or soil from the wall of the hole by the drilling equipment as it is withdrawn from the hole or while geological samples are being taken.
  • the clay strata at depth around the hole swells to "choke" the hole, when contacted by ground water from another level in the hole.
  • the operator When the hole wall collapses, or the clay chokes the hole, the operator either has to abandon the drilling equipment down the hole or use a second rig to try to recover the equipment by drilling a second hole closely adjacent the first. It will be readily apparent to the skilled addressee that the second rig could suffer the same fate as the first rig.
  • EP-A-65601 (corresponding with the features of the preamble of claim 1) there is described an adaptor for drilling strings, including valve means for selectively circulating fluids from the drill string to the well bore above the drill bit, and from SU-A-825838 a flushing and wash-over valve for drilling is known, comprising three isolated chambers with specified link ports to allow bottomhole scavenging. It is an object of the present invention to provide an adaptor for drilling strings which can enable the down-hole equipment to be recovered.
  • the present invention resides in an adaptor for drilling strings according to the characterising features of claim 1.
  • drilling equipment shall be used to include a drilling bit, a cross-over-sub, a percussion hammer or the like drilling equipment.
  • the adaptor 10 is attached at the lower end of a drilling string 11 (shown in dashed lines in FIGS. 3 and 4) which has inner and outer pipes 12, 13 forming co-axial pressure and exhaust passages 14, 15.
  • a reverse circulation pneumatic hammer 100, with a drill bit 101, is attached to the lower end of the adaptor 10.
  • the adaptor body 16 has a head 17 with a tapered, screw-threaded bore 18, to enable it to be screwed onto the lower end of the drilling string 11.
  • a plurality of intake ports 20 in the head 17 communicate with the pressure passage 14 and with radially extending intake passages 21.
  • Three helical splines 22 are provided around, and extend down, the body 16.
  • the sleeve 23 has pairs of internal helical splines 24 engaged with the splines 22 on the body 16 to enable the sleeve 23 to move rotatably and longitudinally with respect to the body.
  • intake passages 25 are defined by the sleeve and the body, between the pairs of helical splines 24.
  • a mounting block 26 is welded to the lower end of the sleeve 23 and has helical splines 27 engageable in a socket 28 at the upper end of the hammer 100.
  • a tubular extension 29 on the mounting block 26 is slidably and rotatably received within the exhaust passage 19a in the body.
  • a plurality of intake passages 32 extend down through the mounting block 26 and communicate with intake ports (not shown) in the hammer 100.
  • a first variable passage chamber 33 is defined by the body 16 and sleeve 23 and is connected by the intake passages 25 to a second variable volume chamber 34 defined by the body 16, sleeve 23 and mounting block 26.
  • the chambers 33, 34 provide manifolds interconnecting the intake passages 21 and passages 25, and the passages 25 and intake passages 32 respectively.
  • a plurality of upwardly directed teeth 35, with tungsten-carbide cutting inserts 36, are provided around the periphery of the upper end of the sleeve 23, and similar teeth 37, with inserts 36, around the periphery of the lower end of the sleeve 23.
  • the upper and lower teeth 35, 37 are aligned and respective teeth are separated by vertical grooves or reliefs 38.
  • the pressurized air from the pressure passage 14 of the drilling string is directed via the intake ports 20 and the intake passages 21 into the first chamber 33, down the air passages 25 to the second chamber 34 and then via air intake passages 32 to the intake ports of the hammer 100.
  • the exhaust air, carrying the drilled earth, travels up the exhaust passages 31, 19a, 19 to the exhaust passage 15 in the drilling string 11.
  • the drilling string is reversed (or rotation simply stopped) and the body 16 moves up within the sleeve 23 until the intake passages 21 are exposed to direct the pressurized air up the hole (see FIG. 4). If the debris cannot be cleared with the air, the debris can be loosened with the teeth 35, and then blown up the hole.
  • the drilling string can be positioned with the hammer 100 and drill bit 101 below the collapsed section.
  • Grout can be pumped down the passage 14 and out the intake passages 21 and up the hole.
  • the drilling string can be rotated and raised so that the teeth 35 can cut a smooth bore in the grouted (repaired section) of the hole.
  • the diameter of the adaptor 10 is just smaller than the diameter of the drill hole so that the adaptor 10 can act to stabilize the lower end of the drill string 11.
  • the sleeve 23 can be of smaller diameter than the drill hole and have an enlarged section or periphery flange with an external diameter substantially equal to the diameter of the hole so that the adaptor can act as a stabilizer for the lower end of the drilling string 11.
  • the adaptor 10 can be in the flushing or withdrawal mode (see FIG. 4) as the hammer 100 is lowered to the bottom of the hole so that the hammer is isolated from the pressurized air.
  • the sleeve 23 will move up the body 16 to place the adaptor in the operating mode (see FIG. 3) and air is supplied to the hammer 100 to drive it.
  • the drilling string 11 is raised, the hammer 100 will be automatically shut off. (The hammer 100 will also be shut off if it drills down a preset depth and the drilling string 11 is not simultaneously advanced down the hole.)
  • the adaptor 110 for a pneumatic percussion hammer or a rotary drilling string the body 116, sleeve 123 and mounting block are generally similar to those components hereinbefore described.
  • the body 116 has a head 117 with a screwthreaded bore 118 attachable to the lower end of the drilling string 111 which has a central pressure line 114.
  • Intake passages 121 extend radially through the body 116 from the bore 118; while exhaust ports 119a extend radially from an exhaust bore 119 at the lower end of the body.
  • the sleeve 123 has upper and lower teeth 135, 137, with tungsten-carbide inserts 136 hereinbefore described with reference to the sleeve 23 but the grooves or reliefs 138 are much wider to allow the air and earth to pass up the outside of the adaptor 10 while the drilling is being effected.
  • the mounting block 126 has helical threads 127 to engage the hammer or drill bit 200 and it has a central air intake passage 132.
  • the operation of the adaptor 110 is generally as for adaptor 10. As shown in FIG. 7, in the drilling mode, pressurized air from the central pressure line 114 of the drill string 111 is directed via the bore 118 and intake passags 121 to the first chamber 133, down the air passages 125 to the second chamber 134, through the exhaust ports 119a and exhaust passage 119 in the body and down the air intake 132 in the mounting block 126 to the hammer or drilling bit 200. The air and earth then passes up past the adaptor 110, through the grooves or reliefs 138 about the sleeve.
  • the rotation of the drill string 111 is stopped and the sleeve 123 moves down relative to the body 116 via the helical splines 122, 124 on the body and sleeve respectively.
  • the air is then directed via the intake pasages 121 to the drill hole to clear the debris as shown in FIG. 8. If necessary the drill string 111 may be rotated to enable the teeth 135 or 137 to cut through the obstruction in the drill hole.
  • the sleeve 223 and body 216 may be modified.
  • the helical splines 22, 122 on the body are replaced by vertical ribs 222 with an inclined (or ramp face) 222a over at least the lower half of one side of the vertical rib 222.
  • the sleeve 223 has respective pairs of vertical ribs 224 where one has an inclined face 224a complementary to the ramp face 222a.
  • the vertical ribs 222, 224 and their inclined faces 222a, 224a allow the required rotational and longitudinal movement between the body 216 and sleeve 223 to selectively direct the pressurized air to the drilling equipment or to flush the drilling hole as hereinbefore described with reference to FIGS. 1 to 5 and FIGS. 6 to 9 respectively.
  • the present invention enables the drilling equipment to be recovered and it is virtually impossible that it will become jammmed or stuck in the hole and have to be abandoned; provides means to repair or stabilize the hole; provides stability for the drilling string; full flushing of the hole; accurate sample drilling as the adaptor is substantially the same size as the drilling bit; enables fluids, chemicals, additives, grouts to be pumped back up the hole and enables quick change between drilling equipment.
  • the adaptor may be provided with an anti-wear coating.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Earth Drilling (AREA)

Claims (8)

  1. Adapter (10) für Bohrgestänge mit:
    einem Köper (16) mit einem Kopf (17), der schraubenmäßig auf dem unteren Ende eines Bohrgestänges (11) anbringbar ist, mindestens einen Einlaßdurchgang (21) aufweist, der sich im wesentlichen radial durch den Körper (16) erstreckt und so angeordnet ist, daß er mit einem Druckdurchgang (14) in dem Bohrgestänge (11) in Verbindung steht;
    einer Hülse (23), die auf dem Körper (16) angebracht ist und in Längsrichtung relativ dazu bewegbar ist;
    einem Montierungsblock (26), der an dem unteren Ende der Hülse (23) angebracht ist und damit relativ zu dem Körper (16) bewegbar ist und zum Verbinden mit der Bohrausrüstung angeordnet ist und mindestens einen Lufteinlaßdurchgang (32) aufweist, der mit einer Lufteinlaßöffnung in der Bohrausrüstung verbindbar ist; und Luftdurchgangsmittel, das zwischen dem Körper (16) und der Hülse (23) definiert ist, zum Verbinden der Einlaßöffnung (21) in dem Körper mit dem Lufteinlaßdurchgang (32) in dem Montierungsblock angeordnet ist;
    so angeordnet, daß in einer ersten Position der Hülse relativ zu dem Körper Druckluft von dem Druckrohr durch den Einlaßdurchgang (21) in den Körper (16), das Luftdurchgangsmittel und den Lufteinlaßdurchgang (32) in dem Montierungsblock (26) zu der Lufteinlaßöffnung der Bohrausrüstung gerichtet wird; und in einer zweiten Position der Hülse relativ zu dem Körper Druckluft durch den Einlaßdurchgang (21) zu dem Bohrloch gerichtet wird;
    dadurch gekennzeichnet,
    daß der Körper (16) geneigte Flächen (22) aufweist, die in Eingriff mit entsprechenden geneigten Flächen (24) an der Hülse (23) so stehen, daß, wenn die Drehrichtung des Bohrgestänges umgekehrt wird, sich die Hülse (23) relativ zu dem Körper (16) zum Freigeben oder Bedecken des Einlaßdurchganges in dem Körper bewegt.
  2. Adapter nach Anspruch 1,
    gekennzeichnet durch eine erste Kammer (33) variablen Volumens, die durch den Körper (16) und die Hülse (23) definiert wird;
    eine zweite Kammer (34) variablen Volumens, die von dem Körper (16) der Hülse (23) und dem Montierungsblock (26) definiert wird;
    und
    wobei das Luftdurchgangsmittel die erste (33) und zweite Kammer (34) verbindet.
  3. Adapter nach Anspruch 2,
    dadurch gekennzeichnet, daß er mit einem Schlaghammer (100) oder einem Drehbohrmeißel (101) verbunden ist.
  4. Adapter nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, daß der Montierungsblock (26) einen röhrenförmigen oberen Abschnitt aufweist, der verschiebbar in einem Auslaßdurchgang (19) des Körpers aufgenommen ist, so daß er eine Verbindung zwischen einem dritten Durchgang (19) und einem Auslaßdurchgang (30) in dem Montierungsblock vorsieht.
  5. Adapter nach einem der Ansprüche 1 bis 4,
    dadurch gekennzeichnet, daS eine Mehrzahl von Schneidezähnen (35) um den Umfang des oberen Endes der Hülse (23) vorgesehen ist, damit sich der Adapter durch irgendeinen Abraum in dem Bohrloch schneiden kann, wenn das Bohrgestänge gedreht und zurückgezogen wird.
  6. Adapter nach Anspruch 5,
    dadurch gekennzeichnet, daß eine Mehrzahl von ähnlichen Schneidezähnen (37) um einen Umfang des untere Endes des Adapters vorgesehen ist.
  7. Adapter nach Anspruch 5 oder Anspruch 6,
    dadurch gekennzeichnet, daS die Schneidezähne durch Längsrillen oder Aussparungen (38) getrennt sind, die sich im wesentlichen vertikal auf der Außenseite der Hülse (23) erstrecken; und daS die Schneidezähne jeweils gehärtete Einsätze (36) aufweisen.
  8. Adapter nach einem der Ansprüche 1 bis 7,
    dadurch gekennzeichnet, daß der Außendurchmesser der Hülse (23) oder eines vergrößerten Abschnittes oder eines Umfangsflansches der Hülse (23) gerade kleiner als der Durchmesser des Bohrloches ist, damit der Adapter zum Stabilisieren des unteren Endes des Bohrgestänges in dem Bohrloch wirken kann.
EP89120215A 1988-10-31 1989-10-31 Bohrstrangzwischenstück mit kontrollierbarem Luftdurchlass Expired - Lifetime EP0367240B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU24479/88 1988-10-31
AU24479/88A AU604378B2 (en) 1987-10-29 1988-10-31 Improvements in drilling equipment

Publications (2)

Publication Number Publication Date
EP0367240A1 EP0367240A1 (de) 1990-05-09
EP0367240B1 true EP0367240B1 (de) 1994-03-16

Family

ID=3713381

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89120215A Expired - Lifetime EP0367240B1 (de) 1988-10-31 1989-10-31 Bohrstrangzwischenstück mit kontrollierbarem Luftdurchlass

Country Status (5)

Country Link
US (1) US4974690A (de)
EP (1) EP0367240B1 (de)
JP (1) JPH0355388A (de)
CA (1) CA1335449C (de)
DE (1) DE68913905T2 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5143162A (en) * 1991-09-27 1992-09-01 Ingersoll-Rand Company Device for removing debris from a drillhole
US5722496A (en) * 1996-03-19 1998-03-03 Ingersoll-Rand Company Removable guide member for guiding drill string components in a drill hole
WO2002044511A1 (de) * 2000-12-02 2002-06-06 Tracto-Technik Gmbh Pneumatische felsbohrvorrichtung und verfahren zum starten einer solchen vorrichtung
IES20100502A2 (en) * 2010-08-12 2011-04-27 Minroc Techn Promotions Ltd An attachment for percussion drill tools
CN102353040B (zh) * 2011-08-09 2013-03-27 江苏大江石油科技有限公司 一种超高压燃烧装置
JP6071700B2 (ja) * 2013-03-29 2017-02-01 株式会社クボタ 孔内洗浄用ベーラ、及び孔内洗浄用ベーラを用いたベーリング作業方法
CN107676035B (zh) * 2017-11-19 2023-09-22 徐州澳恒机械科技有限公司 一种液压打桩机的钻杆装置
CN115266205A (zh) * 2022-08-29 2022-11-01 宝武集团鄂城钢铁有限公司 一种屑状样品取样装置及其使用方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU825838A1 (ru) * 1979-05-07 1981-04-30 Inst Burovoi Tekhnik Клапан промывочный

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1817067A (en) * 1929-02-26 1931-08-04 Erd V Crowell Drill stem
US2869828A (en) * 1956-05-07 1959-01-20 Mcclinton John Keyseat tool
US2906493A (en) * 1957-12-16 1959-09-29 Jersey Prod Res Co Washover pipe fluid by-pass sub
US3371729A (en) * 1965-10-12 1968-03-05 Charles J. Carr Circulating stabilizer-reamer and bumper
US3804186A (en) * 1973-04-20 1974-04-16 W Schoeffler Valved jet device for well drills
EP0065601A1 (de) * 1981-05-22 1982-12-01 James Dorman Lawrence In stätigem Kontakt mit der Bohrlochsohle gehaltenes Werkzeug
US4700782A (en) * 1986-11-07 1987-10-20 Dresser Industries, Inc. Flow control valve for use in oil and gas wells and the like

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU825838A1 (ru) * 1979-05-07 1981-04-30 Inst Burovoi Tekhnik Клапан промывочный

Also Published As

Publication number Publication date
US4974690A (en) 1990-12-04
JPH0355388A (ja) 1991-03-11
DE68913905D1 (de) 1994-04-21
CA1335449C (en) 1995-05-02
DE68913905T2 (de) 1994-07-21
EP0367240A1 (de) 1990-05-09

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